Add NuGet symbols package

Author: govert

NuGet/ExcelDna.IntelliSense/ExcelDna.IntelliSense.nuspec

@@ -17,6 +17,7 @@
         </dependencies>
     </metadata>
     <files>
-        <file src="..\..\Source\ExcelDna.IntelliSense\bin\Release\ExcelDna.IntelliSense.dll" target="lib\net40\ExcelDna.IntelliSense.dll" />
+      <file src="..\..\Source\ExcelDna.IntelliSense\bin\Release\ExcelDna.IntelliSense.dll" target="lib\net40\ExcelDna.IntelliSense.dll" />
+      <file src="..\..\Source\ExcelDna.IntelliSense\bin\Release\ExcelDna.IntelliSense.pdb" target="lib\net40\ExcelDna.IntelliSense.pdb" />
     </files>
 </package>

NuGet/ExcelDna.IntelliSense/PackWithSymbols.bat

@@ -0,0 +1,5 @@
+nuget pack ExcelDna.IntelliSense.nuspec -Symbols
+
+REM Now do
+REM nuget push ExcelDna.IntelliSense.x.x.x.nupkg -source https://nuget.org
+REM nuget push ExcelDna.IntelliSense.x.x.x.symbols.nupkg -source https://nuget.smbsrc.net/